This to you straight from the History Channel:
Apparently, Andrew Jackson liked to duel people, to build his reputation. He was crafty though, one time he made an agreement with the other guy and they both shot their pistols into the air. They both got the street cred for being dueling studs, but they also both got to live.
Another time he dueled a guy who accused his wife of being an adulteress (I would fight too!); the problem is that he was fighting a guy with a reputation for being a great shot. So he hatched a plan . . . he let the guy shoot him (he was hit in the chest a few inches from his heart). He put his left hand over the wound to slow the bleeding. Then he slowly and carefully took aim. He shot his opponent and killed him. It took Jackson three months to recover from his wound.
Dang! The next time you talk about Tiger Woods being tough for playing golf hurt, you should reconsider your definition of tough.